JPH06504353A - Disc brakes used in vehicles, especially street vehicles - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] For vehicles, especially street vehicles Disc brake used The present invention is a disc brake for use in vehicles, particularly street vehicles, and A brake caliper with a tightening actuator is provided on one side of the rake disc. and the tightening actuating device has a rotational axis that intersects at right angles to the axis of the brake disc. It has a rotary lever that can be rotated around the center, and the rotary lever is connected to the brake disc. It is supported by the brake caliper via an approximately semicircular rotating bearing on the side opposite to the brake caliper. The rotary lever is rotated through an eccentric body on the side facing the brake disc. The cross beam is in contact with the cross beam at approximately the center in the longitudinal direction, and the cross beam is parallel to the axis of rotation. and both ends of the crossbeam are connected to the tightening actuator side through bushing rods. A brake shoe is supported on the brake caliper so that it can move parallel to the axis. connected to each other, and the crossbeam is also guided so as to be movable substantially parallel to the axis. Concerning the format that is used.

This type of disc brake is described in German Patent Application No. 371 It is known based on specification No. 6202. In this known disc brake, the crossbeam has a slide guide in the brake caliper, and in this case, the lateral The spars can only be moved parallel to the axis of the brake disc. Brake action To counteract the lateral displacement of the eccentric along the crossbeam during the introduction and brake release processes. eccentrics and crossbeams in order to avoid friction, wear and hysteresis. A pressure plate is provided between the two.

An eccentric body contacts this pressure plate on one side. said pressure The plate is supported on the other side via flat roller bearings on the crossbeam. Sara ” In the above-mentioned known disc brake, the eccentric body is attached to the brake caliper. , is rotatably supported via a semi-circular rolling bearing, and the brake On the Kidisk side, a compression spring is tightened between the crossbeam and the brake caliper. , this compression spring elastically tensions the crossbeam towards the eccentric.

Based on German Patent Application No. 1600175, as stated at the beginning: Disc brakes of different types are known. This known disc brake In this case, the eccentric body is configured as a notch placed eccentrically on the rotating shaft. The rounded bottom of the notch and the axis of the brake disc A round chamfer is formed on both sides between the crimp member and the crimp member, which is guided so that it can only move in parallel. A bushing rod with a rounded end is disposed. However, this type of arrangement requires a considerable amount of construction space, and furthermore the Butsch rod has a good hold on reliability. Does not have equipment. Therefore, the bushing rod may be at the target position. This could lead to disc brake failure. Put it away.

The object of the present invention is to improve the disc brake of the type mentioned at the beginning so that it is suitable for installation. while maintaining a convenient configuration and a functional form with low friction, wear and hysteresis. Therefore, the objective is to provide a disc brake that has a simple and inexpensive structure. Ru.

In order to solve this problem, in the configuration of the present invention, an eccentric body is provided relative to the rotation axis. A bearing device configured as a parallel rotation bearing is provided, the bearing device being configured as a parallel rotation bearing. is located eccentrically with respect to the rotation axis located on the rotation lever and the brake disk is Acting on the crossbeam in the direction of pressure directed towards the disk, the crossbeam is exclusively rotated. The lever is connected to the rotary lever only in a movable manner. Based on this configuration By accepting the extremely slight tilting movement of the crossbeams, we have created an extremely simple and functional design. This allows suitable eccentric configurations and eccentric couplings to the transverse beams.

Claims 2 and below provide advantageous features for the disc brake configured in this way. The configuration is described.

The drawing shows an embodiment of a disc brake according to the invention.

Figure 1 shows the basic structure of this type of disc brake. FIG. 2 shows an enlarged axial cross-sectional view of a disc brake according to the present invention. , FIG. 3 shows the position of the important parts of the disc brake for the present invention in FIG. 2. The figure shows a partial cross-sectional view perpendicular to the axis and parallel to the axis; Figure 5 shows another embodiment of the disc brake.

The brake disc l shown in FIG. 1 is straddled by a brake caliper 2.

Regarding this brake caliper, it is located on one side of the brake disc l and has a tightening function. Only the part accommodating the moving device is shown. In areas not shown, the The rake caliper 2 is constructed and mounted in a conventional manner. brake carry In Part 2, a rotation bearing 3 in the shape of a half-split shell is used, and the rotation bearing 3 is used as a cam lever. The rotation lever 4 is centered on a rotation axis extending parallel to the plane of the brake disc 1. and is rotatably supported. The rotation lever 4 is driven via the lever 5. be exposed. The end of this lever is connected to the brake cylinder held by the brake caliper 2. (not shown) connected to a piston or mechanical brake rod (not shown). The rotating lever 4 works as a cam (an eccentric body It is connected to the crossbeam 6 via. This crossbeam breaks inside brake caliper 2. - Extends approximately parallel to the plane of the key disk 1, and extends perpendicularly to this plane. Exercise is possible. Both ends of the crossbeam 6 can be adjusted in position with one adjusting spindle 7; 8 each. It is screwed in place.

Both adjusting spindles 7.8 are located inside the brake caliper 2 and are attached to the brake disc 1. It extends perpendicularly to the plane and ends in the crimping member 9 on the side facing this plane. Ru. This crimping member includes a brake shoe 10 that can be crimped onto the brake disc 1. are in contact. The brake shoe 10 is particularly placed in the horse direction with respect to the brake disc 1. The holding device 11 is guided so as to be movable laterally relative to the brake disc l. Ru. The holding device 11 is of a universal type and can be attached to the brake caliper 2 or to the brake support. It's good to belong. Both adjusting spindles 7.8 have an axis intersecting the spindle thread. It has directional teeth. This axial toothing includes internal teeth on each gear. They mesh together. Each gear is attached to an adjusting spindle 7; 8, which cannot rotate relative to each other. It is supported so that it can move in the axial direction. In Figure 1, the gear is a toothed belt. 12. This toothed belt allows the gears to move relative to each other. It is connected so that it cannot rotate. Of course, different from this configuration, the gears can be used in a different format. , which are not relatively rotatable but are axially movable in conjunction with the adjusting spindles 7; 8. It is also possible to tie the Furthermore, at least one after-play adjusting drive The sliding device allows the two adjusting spindles 7.8 to be screwed together synchronously. In this case, when the disc brake is released, brake shoe 10 or The depth release stroke is maintained regardless of the wear of the brake shoe on the opposite side.

As shown in FIGS. 2 and 3, the rotation bearing 3 is connected to the rotation lever 4 and the brake. There is no space between the caliper 2 or the brake caliper (the part connected to it). It is configured as a semicircular rolling bearing. Lever 5 releases the disc brake. In the release state, the position shown by the solid line is taken, and the disc brake is applied to maximum braking. In this state, it takes the position shown by the dashed line. The rotary lever 4 whose cross section is approximately semi-cylindrical is On the side facing the brake disc, eccentrically with respect to the rotation axis of the rotary bearing 3, It has a semicircular notch 13. This notch has a corresponding, also approximately half Circular cutouts 14 are located opposite each other. This notch is for the brake disc It is arranged on the crossbeam 6 on the opposite side. Both notches 13 and 14 have a horizontal cross section. A cylindrical bearing device 15 (described in more detail later) is engaged. brake day On the side facing the bridge, the crossbeam 6 has a blind hole-like cutout 16, which is used for braking. It is surrounded by a tubular projection 17 that projects in the direction of the key disc 1.

The projection 17 forming the end range of the crossbeam 6 on the brake disc side is connected to the brake caliper. 2, perpendicular to the plane of the brake disc 1. , is supported in a sliding manner with play, and in this case, the crossbeam 6 is supported by the factors shown in Fig. 2. It becomes possible to perform small turning movements within the plane. In the notch 16, 18 is located. This spring is tightened between the crossbeam 6 and the brake caliper 2. The transverse beam 6 is loaded in the direction of the rotary lever 4.

The brake disc l shown in FIG. 2 has, on the side opposite to the brake shoe 10, The brake shoe 10a can be crimped using the brake caliper 2a.

As shown in FIGS. 2 and 3, the bearing device 15 has a pin 19. As shown in FIGS. child The bin extends over the entire width of the rotary lever 4. The bins are axially phased. It is supported by a plurality of webs 20 extending into the notches 14 at regular intervals. or retained by said web. The web is also shaped like a semi-circle. It has an end that is aligned with the circumferential surface of the ring 19. The bins 19 have an axial mutual spacing. and engages between the webs 20 with a radial play with respect to the crossbeam 6. Four rolling bearings 21 are provided. The outer race of this rolling bearing is supported by the peripheral wall of a notch 13 provided in the rotary lever 4. Each rolling axis The receiver 21 is shown in cross-section in FIGS. 2 and 3.

As can be seen from Fig. 2, for example, when applying the brake, the lever 5 is used to control the rotation axis. When the rotary lever 4 is rotated counterclockwise around the support 3, the support The device 15 rotates almost to the left while drawing an arc around the rotation axis of the rotary bearing 3. made to spin. In this case, the crossbeam 6 is centered around the sliding bearing provided on the protrusion 17. is moved to the left while performing a slight pivoting movement, which causes the disc blade to move to the left. The rake is crimped and tightened in a known manner (therefore not described in detail) .

The rotary lever 4 and the bearing device 15 have a pure roll motion along a small lever arm. only occurs. Such a roll movement requires very little resistance and therefore little friction. This only results in wear and tear, and therefore there is no difference between the braking application process and the braking release process. The eccentric body installed on the 0-rotation lever 4 that produces only a small hysteresis between (The bearing device 15 is made from commercially available individual parts that are inexpensive, reliable, and have a reliable function.) It has become.

In a variant of the embodiment described above, it is also possible to design the bearing device 15 differently. Of course it is possible. In this case, for example, only one rolling bearing or three It is possible to construct a bearing device with a rolling bearing. Also, the crossbeam 6 Alternatively, the support of the bottle 19 on the rotating lever 4 and the support of the rolling bearing 21 may be interchanged. You can also exchange it. In particular, the bin 19 supports or holds this bin Can be held firmly in place. The same thing can be said about the outer race of the rolling bearing 21. This is also possible for In all of the above embodiments, the axis of the brake disc I symmetrical plane 22 that divides the rotary lever 4 in the longitudinal direction, including the line It is advantageous to form the arrangement symmetrically.

In such a way that both the rolling bearing 21 and the rotating bearing 3 of the bearing device 15 act. Due to the small design of this arm, the rolling bearing can be mounted on one or both sides of the device. Alternatively, a sliding bearing can be provided with the device. This plain bearing is a device A self-lubricating bearing is a shell, i.e. a bearing with built-in lubricant. It is advantageous to have a shell. In this case, the perfectly circular roller shown in Figure 2 Instead of a cantilever bearing 21, a shaft extending only over a semicircle or a third of a circle The receiver connects the shell to the bin 19 and the part rotatably supported by the bin, i.e., the part shown in the figure. In the embodiment, it is also possible to incorporate it between the rotary lever 4. slipping like this By using bearings, manufacturing costs for disc brakes can be further reduced. Wear.

As shown in FIGS. 4 and 5, in a variation to the above embodiment, the crossbeam 6 (Fig. 4) or the rotary lever (Fig. 5). A fixed arrangement is also possible. Each of these protrusions protrudes against the other. On the side facing the other part, there is a cylinder extending for approximately 374 yen. It has a shaped surface 24. This cylindrical surface is flat with respect to the rotation axis 25 of the rotation lever 4. In other words, the cylindrical body axis 26 is parallel to the rotation bearing 3. That's it and the other part, i.e. the rotary lever 4 in the embodiment shown in FIG. 4, and the embodiment shown in FIG. In this case, the crossbeam 6 has a cylindrical notch corresponding to the protrusion 23, and this notch has a A projection 23 is rotatably engaged. In this embodiment as well, the protrusion 23 and the A rotary bearing formed from a notch that accommodates a protrusion and a rolling bearing or self-contained The lubricated bearing can be constructed as a plain bearing with bushings.

international search report international search report Continuation of front page (72) Inventor Schlers, Otto Federal Republic of Germany D-8000mi Munich 90 St. Magnus Strasse (72) Inventor Trimpe, Robert Federal Republic of Germany D-8000 Munich 50 Bockmiersch Torase 55

Claims (13)

[Claims] 1. Disc brakes used in vehicles, especially street vehicles, A brake caliper (2) with a tightening actuator is provided on one side of the disc (1). and the tightening actuating device intersects at right angles to the axis of the brake disc (1). It has a rotary lever (4) that can rotate around a rotation axis (25) that The rotating lever has an approximately semicircular rotating bearing (3) on the side opposite the brake disc. The rotary lever is supported by the brake caliper (2) via the brake caliper (2). Contact the crossbeam (6) approximately at the longitudinal center via the eccentric on the side facing the kid disk. the crossbeam extends parallel to the axis of rotation (25); Both ends of the brake caliper (2 ) is connected to a brake shoe (10) movably supported in parallel to the axis. The cross beam (6) is also guided so as to be movable substantially parallel to the axis. In this type, the eccentric body is flat with respect to the rotation axis (25). A bearing device (15) configured as a rotary bearing is provided, the bearing device being The position is eccentric to the rotation axis (25) located on the rotation lever (4). and acts on the crossbeam (6) in a pressing direction directed towards the brake disc (1). and the crossbeam is connected to the rotary lever (4) only for rotational movement. A disc brake used in vehicles, especially street vehicles, characterized by tree. 2. When the rotary lever (4) and the crossbeam (6) face each other, It has approximately semicircular notches (13; 14), and the support device (15) is inserted into the notch. ) is engaged. 3. The bearing device (15) has at least one pin (19), which the pin comprises at least one rotational bearing (21) arranged on said pin; , said pin (19) is connected to both components, namely said rotary lever (4) and said lateral The rotation bearing (21) is supported by one component of the girder (6). 3. A disc brake according to claim 2, wherein the disc brake is supported by the other component. 4. At least one of the components of the bearing device (15), i.e. A pin (19) or a rotation bearing (21) is supported on one component, respectively. firmly held on the attached component, i.e. the rotating lever (4) or the crossbeam (6). The disc brake according to claim 3. 5. The rotary lever (4) is divided into the pin (19) in the longitudinal direction including the axis. Two rotational bearings (21) are arranged side by side on each side of the plane of symmetry (22). The disc brake according to claim 3 or 4, wherein: 6. The bearing device is designed as a circular pin, the circular pin having an approximately semicircular shape. one component rotatably via at least one rotational bearing, i.e. supported on levers or crossbeams, each retained on the other component , A disc brake according to claim 2. 7. The bearing device is connected to one component, namely the rotary lever (4) or the crossbeam (6). ), each projecting in the direction of the other component (6; 4); The protrusion has a cylindrical shape parallel to the axis of rotation (25). A cylindrical surface (24) centered on the body axis (26) and extending over 3/4 of the circumference , and each of the protrusions is provided with a pair provided on the other component (6; 4). 2. The recess of claim 1, wherein the recess is rotatably engaged in a corresponding recess to form a rotary bearing. disc brake. 8. At least one of the rotation bearings (3 and/or 21) is a rolling shaft. Disk according to any one of claims 1 to 7, which is configured as a receiver. brake. 9. At least one of the rotary bearings is a sliding bearing with a self-lubricating bearing bush. 8. The disk according to claim 1, wherein the disk is configured as a bearing. Scrub brake. 10. The support device (15) is elastically tensioned in the pressing direction by a spring (18). The disc brake according to any one of claims 1 to 9, wherein: 11. The spring (18) of said bearing device is located on the side opposite the brake disc (1). one piece is arranged to act on said crossbeam (6) in the other direction, and the other piece is arranged to act on said crossbeam (6). Disc brake according to claim 10, supported on calipers (2). 12. The said crossbeam (6) is connected to the brake carrier only in the end range on the brake disc side. with radial turning play with respect to the axis located at the pad (2) and with respect to said axis. 12. The device according to claim 1, wherein the device is supported so as to be movable in parallel. Includes disc brakes. 13. The cross beam (6) has a tubular projection (17) on the brake disc side. and the protrusion is provided with a blind hole-shaped notch (16) that protrudes into the crossbeam (6). , the protrusion (17) slides onto the brake caliper (2) of the crossbeam (6). Claim 11 or 12, characterized in that it forms an end region on the side of the supported brake disc. Disc brakes as listed.